Pick up the correct statement from the following:

Pick up the correct statement from the following :

[A].	The distance between the points of intersection of the extreme tangents to the transition curve is kept greater than 7500 m x sum of grade changes at the point of intersection
[B].	The rate of change of grade is limited to 0.3% per 30 m length of the curve
[C].	According to I.C.A.O. the maximum longitudinal gradient along a runway is limited to 1.5%
[D].	All the above.

Answer: Option D

Explanation:

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